* `federation/deploy/deploy.sh` was an interim solution introduced in Kubernetes v1.4 to simplify the federation control plane deployment experience. Now that we have `kubefed`, we are deprecating `deploy.sh` scripts. ([#38902](https://github.com/kubernetes/kubernetes/pull/38902), [@madhusudancs](https://github.com/madhusudancs))

- Windows worker nodes in a Kubernetes cluster now support Windows Server version 1903 in addition to the existing support for Windows Server 2019
- The RuntimeClass scheduler can now simplify steering Linux or Windows pods to appropriate nodes

Maintainers of FlexVolume drivers should implement a CSI driver and move users of FlexVolume to CSI.
Users of FlexVolume should move their workloads to CSI driver.

### Deprecation of klog specific flags

To simplify the code base, several [logging flags got marked as deprecated](https://kubernetes.io/docs/concepts/cluster-administration/system-logs/#klog) in Kubernetes 1.23.

- Introduce `ComponentSLIs` alpha feature-gate for component SLIs metrics endpoint. ([#112884](https://github.com/kubernet...

- Exposed the `apiserver_watch_cache_resource_version` metric to simplify debugging problems with watchcache. ([#125377](https://github.com/kubernetes/kubernetes/pull/125377), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Instrumentation]

- We’re working to simplify the Windows node join experience with better scripts and kubeadm. Scripts and doc updates are still in the works, but some of the needed improvements are included in 1.15.  These include:

* Adding Italian translation for kubectl ([#50155](https://github.com/kubernetes/kubernetes/pull/50155), [@lucab85](https://github.com/lucab85))
* Simplify capabilities handling in FlexVolume. ([#51169](https://github.com/kubernetes/kubernetes/pull/51169), [@MikaelCluseau](https://github.com/MikaelCluseau))

* Adding Italian translation for kubectl ([#50155](https://github.com/kubernetes/kubernetes/pull/50155), [@lucab85](https://github.com/lucab85))
* Simplify capabilities handling in FlexVolume. ([#51169](https://github.com/kubernetes/kubernetes/pull/51169), [@MikaelCluseau](https://github.com/MikaelCluseau))

- Simplied validation error message for invalid fields by removing redundant field name. ([#132513](https://github.com/kubernetes/kubernetes/pull/132513), [@xiaoweim](https://github.com/xiaoweim)) [SIG API Machinery, Apps, Auth, Node and Scheduling]

as well as tracking of field ownership, running on the Kubernetes API server. Server-side Apply helps users and controllers manage their resources via declarative configurations. It allows them to create and/or modify their objects declaratively, simply by sending their fully specified intent. After being in beta for a couple releases, [Server-side Apply](https://kubernetes.io/docs/reference/using-api/server-side-apply/) is now generally available.

### Container Storage Interface graduations...